The former Andrew Wilson, a 43-year-old self-employed inventor, was granted legal permission last week by a circuit judge to change his name.
It's just They, no surname.
He also has changed his driver's license to reflect his new name.
They said he did it for humor to address the common reference to "they."
"'They do this,' or 'They're to blame for that.' Who is this 'they' everyone talks about? 'They' accomplish such great things. Somebody had to take responsibility," he said.